But that-

ONCE AND FOR ALL!

  • BasicTraveler@kbin.social
    link
    fedilink
    arrow-up
    8
    ·
    1 year ago

    The ice isn’t to cool the water, the ice is to reflect most of the incoming light.

    Sea ice keeps the polar regions cool and helps moderate global climate. Sea ice has a much brighter surface compared to many other Earth surfaces, particularly the surrounding ocean. The darker ocean reflects only 6 percent of the sun’s energy and absorbs the rest, while sea ice reflects 50 to 70 percent of the incoming energy.

    -- https://nsidc.org/learn/parts-cryosphere/sea-ice/quick-facts-about-sea-ice

    • PhineaZ@kbin.social
      link
      fedilink
      arrow-up
      2
      ·
      1 year ago

      Thank you very much, i was looking for this comment. The issue with 1°, 1.5°, 2° C of warming is that at some point you will break a critical level where the process is greatly accelerated because less/no sunlight is reflected by the ice caps, further increasing the energy absorption. This is especially apparent in Greenland and the Alps (and probably other glaciers), where the uncovered earth now absorbs WAY more light than the sheets of ice did, thus essentially making the melting process irreversible (at least in our comprehension).

    • Invalid@kbin.social
      link
      fedilink
      arrow-up
      0
      ·
      1 year ago

      I suppose but if you are reflecting it into greenhouse gases then the air temperatures go up instead.

      • BasicTraveler@kbin.social
        link
        fedilink
        arrow-up
        2
        ·
        1 year ago

        Not really. Greenhouse gases don’t absorb all wavelengths of light. Generally they only absorb parts of the IR spectrum. The 50-70% of light reflected isn’t absorbed by greenhouse gasses because it’s not in a wavelength that it can absorb, it mostly radiates back into space.